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GHK-Cu Skin Tightening Serum
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GHK-Cu, paired with Pal-150. For the look of a firmer jawline, neck and under-eye. Twice a day, no retinol irritation.
- Visibly firmer-looking jawline & under-eye over 8–12 weeks
- GHK-Cu at a disclosed 1%, studied for four decades
- Fragrance-free, no sting, layers under anything
- Free shipping over $99
- Ships in 1–2 business days
Complete your ritual
Full ritual · 10% off
$113
$101.70
incl. this product
Aqua, Glycerin, Copper Tripeptide-1 (1%), Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Sodium Hyaluronate, Panthenol, Allantoin, Phenoxyethanol. Fragrance-free. Vegan.
Apply 3–4 drops to clean, dry skin morning and night. Press into jawline, neck and under-eye. Wait two minutes before moisturizer. Avoid layering with strong acids in the same routine. New to it? Patch test first: a little behind the ear or on the inner arm, 24 hours.
Ships in 1–2 business days. Free US shipping over $99. Returns and refunds are covered in our returns policy.
The full ritual · save 10%
3 steps, one ingredient.
$113
$101.70
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01 Cleanse
Black Charcoal GHK-Cu Facial Cleanser
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02 Treat You’re here
GHK-Cu Skin Tightening Serum
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03 Hydrate
GHK-Cu Face Cream
What makes Mystifi different?
Most firming products either irritate or do nothing. In a small one-month pilot, skin biopsies responded in 7 of 10 people using a copper peptide cream, against 4 of 10 using retinoic acid. No sting, no peeling, no purge.
| Feature | Mystifi | Retinol | Injectables |
|---|---|---|---|
| Visibly firmer-looking skin over 8–12 weeks | Yes | Yes | Yes |
| No irritation or peeling | Yes | No | Yes |
| Safe to use daily, AM + PM | Yes | No | No |
| No appointments or downtime | Yes | Yes | No |
| Under $70 a month | Yes | Yes | No |
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Questions? We’ve got you covered
Yes: alternate nights with retinol, or use the serum in the morning. Avoid layering directly with L-ascorbic acid or glycolic in the same routine; the copper can destabilize them.
Skin tends to feel smoother within the first weeks. In the published GHK-Cu studies, the look of firmness and fine lines changed over eight to twelve weeks of twice-daily use. Give it that long before you judge it.
It is fragrance-free and alcohol-free, and GHK-Cu has a long tolerability record with no adjustment period. Patch test first, as with anything new: a small amount behind the ear or on the inner arm for 24 hours.
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